Question

L . CU311 2.11, 1120 38.26) Which of the following alkynes has the lowest boiling point? A) 3,3-dimethyl-1-butyne B) 1-hexyne C) 2-heptyne D) 3-hexyne E) 1-decyne 39.31) The carbon-carbon triple bond of an alkyne is composed of A) three o bonds B) three n bonds C) two o bonds and one t bond D) one o bond and two it bonds 40.65) When 2,2-dibromobutane is heated at 150°C in the presence of molten KOH, what is the major organic product? A) 1-bromobut-1-yne B) 1-bromobut-2-yne C) but-1-yne D) but-2-yne E) but-1-ene

Answer 1

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Be Di siamyl borone Date Page 30.26) A) 3,3-dimethyl -1- bityne due to less surface area as compared to other Boiling Dant & Surface Area of compounel 3931 C One o bonds and two t bond C Ans - D do 65 2 kon сис Сиз 15oL Br » Сн, - СЕ С - си But - 2-yne 7 + 2KBr + 1420 Major product D. But 2-yne. Ans Aldehyde 44.80 CH₂ - CH₂ - CH₂ - CH₂ - CH2 - Co = ch. RB e H202 Naon R Chiz -(CH2), - CH = C) Tautomensh Chy-(42) - CH2 - G=0 Aldende